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SUBSEQUENT EVENTS (Details) - USD ($)
Oct. 14, 2020
Oct. 20, 2020
Oct. 19, 2020
Oct. 15, 2020
Sep. 30, 2020
Dec. 31, 2019
Subsequent Event [Line Items]            
Subordinated notes         $ 0 $ 23,000,000
Allowable reserve for credit losses and other Tier 2 adjustments         18,880,000 10,993,000
Tier one risk based capital         $ 188,003,000 $ 179,621,000
Subsequent Event | 2015 Stock Repurchase Plan | Common Stock            
Subsequent Event [Line Items]            
Remaining number of shares authorized to be repurchased     184,863      
Subsequent Event | 2020 Stock Repurchase Plan | Common Stock            
Subsequent Event [Line Items]            
Number of shares authorized to be repurchased (in shares)   300,000        
Stock repurchase program, authorized amount   $ 7,000,000.0        
Fixed 4.75% to Floating Rate Notes, Due 2030 | Subsequent Event            
Subsequent Event [Line Items]            
Subordinated notes $ 20,000,000.0          
Interest rate, stated percentage 4.75%          
Fixed 4.75% to Floating Rate Notes, Due 2030 | Subsequent Event | Minimum            
Subsequent Event [Line Items]            
Debt issuance costs $ 475,000          
Fixed 4.75% to Floating Rate Notes, Due 2030 | Subsequent Event | Maximum            
Subsequent Event [Line Items]            
Debt issuance costs $ 525,000          
Fixed 4.75% to Floating Rate Notes, Due 2030 | Subsequent Event | Federal Home Loan Bank of New York            
Subsequent Event [Line Items]            
Basis spread on variable rate 4.58%          
Senior Subordinated Notes | Subsequent Event            
Subsequent Event [Line Items]            
Tier one risk based capital       $ 10,000,000.0